Rollup merge of rust-lang#47455 - michaelwoerister:cache-ty-collect, …

…r=nikomatsakis

incr.comp.: Cache type_of and some other queries.

Cache some more queries that show up high during profiling. Does not include `generics_of` yet (which profiling shows to also take up quite some time) because the `type_param_to_index` field in there uses raw `DefIndex` values from other crates.

r? @nikomatsakis

src/librustc/ty/maps/config.rs

@@ -662,3 +662,6 @@ impl_disk_cacheable_query!(mir_const_qualif, |def_id| def_id.is_local());
 impl_disk_cacheable_query!(check_match, |def_id| def_id.is_local());
 impl_disk_cacheable_query!(contains_extern_indicator, |_| true);
 impl_disk_cacheable_query!(def_symbol_name, |_| true);
+impl_disk_cacheable_query!(type_of, |def_id| def_id.is_local());
+impl_disk_cacheable_query!(predicates_of, |def_id| def_id.is_local());
+impl_disk_cacheable_query!(used_trait_imports, |def_id| def_id.is_local());

src/librustc/ty/maps/on_disk_cache.rs

@@ -204,8 +204,11 @@ impl<'sess> OnDiskCache<'sess> {
                 let enc = &mut encoder;
                 let qri = &mut query_result_index;
 
-                // Encode TypeckTables
+                encode_query_results::<type_of, _>(tcx, enc, qri)?;
+                encode_query_results::<predicates_of, _>(tcx, enc, qri)?;
+                encode_query_results::<used_trait_imports, _>(tcx, enc, qri)?;
                 encode_query_results::<typeck_tables_of, _>(tcx, enc, qri)?;
+                encode_query_results::<trans_fulfill_obligation, _>(tcx, enc, qri)?;
                 encode_query_results::<optimized_mir, _>(tcx, enc, qri)?;
                 encode_query_results::<unsafety_check_result, _>(tcx, enc, qri)?;
                 encode_query_results::<borrowck, _>(tcx, enc, qri)?;
@@ -215,7 +218,6 @@ impl<'sess> OnDiskCache<'sess> {
                 encode_query_results::<const_is_rvalue_promotable_to_static, _>(tcx, enc, qri)?;
                 encode_query_results::<contains_extern_indicator, _>(tcx, enc, qri)?;
                 encode_query_results::<symbol_name, _>(tcx, enc, qri)?;
-                encode_query_results::<trans_fulfill_obligation, _>(tcx, enc, qri)?;
                 encode_query_results::<check_match, _>(tcx, enc, qri)?;
             }
 

src/librustc/ty/maps/plumbing.rs

@@ -982,4 +982,7 @@ impl_load_from_cache!(
     ConstIsRvaluePromotableToStatic => const_is_rvalue_promotable_to_static,
     ContainsExternIndicator => contains_extern_indicator,
     CheckMatch => check_match,
+    TypeOfItem => type_of,
+    PredicatesOfItem => predicates_of,
+    UsedTraitImports => used_trait_imports,
 );